1242213443 has 8 divisors (see below), whose sum is σ = 1328309280. Its totient is φ = 1157564800.

The previous prime is 1242213439. The next prime is 1242213451. The reversal of 1242213443 is 3443122421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1242213443 - 2² = 1242213439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242213043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360023 + ... + 363456.

It is an arithmetic number, because the mean of its divisors is an integer number (166038660).

Almost surely, 2^1242213443 is an apocalyptic number.

1242213443 is a deficient number, since it is larger than the sum of its proper divisors (86095837).

1242213443 is a wasteful number, since it uses less digits than its factorization.

1242213443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723597.

The product of its digits is 4608, while the sum is 26.

The square root of 1242213443 is about 35245.0484891140. The cubic root of 1242213443 is about 1074.9759339844.

Adding to 1242213443 its reverse (3443122421), we get a palindrome (4685335864).

The spelling of 1242213443 in words is "one billion, two hundred forty-two million, two hundred thirteen thousand, four hundred forty-three".